/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.pinot.controller.recommender.data.generator;

import java.util.Arrays;
import java.util.Random;
import java.util.function.Supplier;
import org.testng.annotations.Test;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertEquals;


public class MultiValueGeneratorHelperTest {

  @Test
  public void testGenerateMultiValueEntries() {

    Random rand = mock(Random.class);
    when(rand.nextInt()).thenReturn(10, 20, 30, 40, 50, 60, 70);
    when(rand.nextDouble()).thenReturn(0.4);
    Supplier<Object> next = rand::nextInt;

    double numberOfValuesPerEntry = 3.3;
    assertEquals(MultiValueGeneratorHelper.generateMultiValueEntries(numberOfValuesPerEntry, rand, next),
        Arrays.asList(10, 20, 30));

    numberOfValuesPerEntry = 3.5;
    assertEquals(MultiValueGeneratorHelper.generateMultiValueEntries(numberOfValuesPerEntry, rand, next),
        Arrays.asList(40, 50, 60, 70));
  }
}
